Have you ever come back to a company after leaving (e.g. a few years later)? How did it go?

I worked at the same company for almost exactly 12 years, I was so burned out that I didn't just leave to a similar role, I changed fields. After a year and a half I was nearly broke and went back to my abusive ex, despite a healthy pay bump I left again after a year and haven't done anything tech related since.